Visiting Swedish professor Jon Bergstrom rivals Old Blue Eyes with his crystal aqua irises.An ophthalmologist and medical researcher, Bergstrom has capitalized on his signature Nordic trait while del ...

Red hair, blue eyes, and left-handed. Redheads know their hair color isn’t the only unique characteristic. In fact, redheads have some other rare tendencies.

For example, why you’ve got blue eyes even though your parents both have brown and why you’re left-handed when your mum and dad both favour their right? It’s all to do with your genes. Your genes ...

Blue and grey eyes, on the other hand, only have dark brown pigment on the back layer of the eye. The stroma has no pigment, but it does have small particles suspended in it.